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Dehumidifier Frosts up
The 5 most common part(s) or condition(s) which cause the symptom Dehumidifier frosts up are listed below starting with the most likely.
If the dehumidifier frosts up the fan motor might be bad. Check to see if the fan blade is spinning freely without hitting the fan shroud. If it does check to see if there is power to the fan motor. If you do not have power to the fan motor check the control if you do have power and the fan motor is not turning fan motor is likely bad.
If the dehumidifier frosts up the blower wheel could be bent or broken stopping the motor from running. Check to see if the wheel turns freely without hitting the fan shroud and is tight on the fan motor shaft. If the blower wheel is physically damaged it will need to be replaced.
If the dehumidifier frosts up the fan blade could be bent or broken stopping the motor from running. Check to see if the fan blade turns freely without hitting the fan shroud and is tight on the fan motor shaft. If the fan blade is physically damaged it will need to be replaced.
If the Dehumidifier coils are freezing up the cause might be a dirty air filter. As the air filter gets dirty it restricts airflow over the evaportor coils. A reduced airflow will cause the evaportor coils to get too cold, which will then cause the humidity in the room to condense on the coils and freeze. As the coils start to freeze the problem gets worse because the frost also reduces the airflow. Eventually, the entire evaporator coil assembly will frost over. If the air filter is dirty clean it or replace it if it is damaged.
Air Flow Problem
For most dehumidifiers to operate correctly without frosting up the room the unit is in needs to be 65 degrees or above. Operating most dehumidifiers in a room less than 65 degrees will result in the coils frosting up.
Dehumidifer Does Not Run
The 5 most common part(s) or condition(s) which cause the symptom Dehumidifer does not run are listed below starting with the most likely.
If the dehumidifier does not run the bucket switch might be bad. The switch is actuated when the water bucket gets full and shuts off the unit. If the switch fails in the open position it will prevent the dehumidifier from running. The switch can be tested with a multi meter to determine if it is operating correctly.
If the dehumidifier does not run than the it could be due to a problem with the humidistat control. This control detects the need to reduce the moisture in the air it runs the dehumidifiers fan and compressor system. If the contacts in the humidistat fail it will prevent the dehumidifier from running.
If the dehumidifier does not run than the it could be due to a problem with the control board. This control detects the need to reduce the moisture in the air it runs the dehumidifiers fan and compressor system. If the contacts of the control board fail it will prevent the dehumidifier from running.
If the dehumidifier does not run the humidity sensor may be defective. The humidity sensor measures the humidity in the room so the control board knows when to turn on and off the compressor and fan. If the humidity sensor is not activating the control at the correct levels it may be defective and will need to be replaced.
Incoming Power Problem
If the dehumidifer does not run check to see if there is power at the electrical outlet which the dehumidifier is plugged into. Plug a lamp or radio into the outlet to check it. If the outlet is dead, check the circuit breakers or fuses for the home.
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